Un/Fortunately (however you wanna look at it!), A fair few developments in my personal life mean, I probably won't be that active on here, or not in the same way now.
But if I do happen to be lucky enough to have any more spurts, I will keep you all updated!

This is the scene that started the confusing journey for me, figuring out I was gay, and into muscle growth. Nothing has topped this scene since. The design of the hulk in this movie is still my fave, and the transformations great. But more importantly, the actual muscle growth. The fact he continued to get bigger and bigger throughout the film as his rage grew while he was shot or trapped it. Loved it. I understand why the couldn't do it obviously, but just wish his cock grew along with him, or faster even. I love a bulgy hulk!

I posted this in personals, but think it might be more appropriate here:
Any big guys, or wannabes, please message me. I want to hear about your bulges and what living everyday life is like with them. Whether that be huge muscles drawing attentions and straining sleeves, or a growing gut threatening shirt buttons and pushing its way into other people’s personal space, or an eye-catching package that displays its large self through whatever you wear.
I wanna hear what it’s like, and perhaps we can fantasise about your assets getting bigger, and if we really believe, maybe we can actually get you to GROW.
I’m open to hear anything, here or privately or on Tumblr. Just message!
Grow big and bulge!

Thank you so much for the compliments. I now really want to write a continuation at some point. Just gotta find the time.
I definitely have plans for the "I" - first person character, to get a sample of that cum. It seems people like the description of slow growth, and want that for muscle too. I shall see if I can find a way for that to work, without changing the premise of the UV cock growth --> cum that instantly grows people premise. But, I think I have an idea.
But also, Dave is due to return at the start of Chapter 2. I wonder how he will fit in to all this

Thanks everyone for the reactions and comments! :
So I got a question.
Did people enjoy the longer and bigger focus on bulge growth? The description of the straining speedo and growing bulge, as opposed to if Brad had been naked the whole time? It's a personal preference of mine, plus I love clothes bursting, but I was just wondering what general opinion was?

Haha, I'm glad. It means you can enjoy the second part later
Perhaps I can focus on a cum flood in a later chapter if people like this sort of thing?
I was worried there was too much focus on the bulge and bulge growth. I find it very hot, almost more hot than seeing a cock, i think because a bulge still teases what is behind it, and what it can become. But not sure it's everyone else's thing.
But it sill has regular cock and muscle growth.
But yeah, glad you two have enjoyed!

So, this is my very first story. Thought I'd crack one out, while I'm waiting for my new job to start. Strangely it's more cock growth orientated than muscle growth, as muscle-growth was my original fetish. But there is muscle growth, and should it be worth continuing, there will be plenty more!
So, please give constructive criticism and/or praise. Mainly praise. Basically just tell me it's awesome. But honestly, any feedback is appreciated, and should I have enough interest and then time, I may try to continue it.
Title may be confusing: grUV - pronounced "groovy". Short for growth: ultra-violet. Which is a teaser for the basis of the growth. But enough waffle, here is:
Chapter 1
Wow. What a night. I awoke with a slow grogginess that so often accompanies a night out clubbing down the bay with Dave. Thankfully we don’t have far to walk back, as he has a boat out in the harbour, docked out at sea. Nevertheless, the fact you have to use one of the numerous row boats to row out to it is always hilarious, especially when you’re as drunk as we were.
“Ok?”
What. I stared blankly, my eyes trying to focus, and take in what had awoken me.
“I said, I’m rowing back into harbour to get some food for us all from town.”
“Us all?” I croaked back.
“Yeah, you, me and Brad.”
“Brad?”
“That guy I tried to introduce you to at the club. I’ve always said he can crash on the boat if he doesn’t feel like getting the last train back to his place. Looks like he took me up on my offer again, and rowed himself over at some point last night.” Dave explained.
I had a vague memory of the cabin door banging open, and waking me in the middle of the night, and seeing a silhouette of a man, as he flopped onto some cushioning on the other side. I couldn’t remember meeting anyone specific at the club, we talked to a lot of people, and all I saw last night was a biggish shadow fall onto the bed near me, I couldn’t make out any discernible features. Nevertheless, I was in no mood to push for details, so simply responded with, “Cool”.
“Yeah. He’s already up and gone for a swim. Maniac. Anyway, I’ll be quick as I can, but be nice. You were definitely too out of it to properly get to know him last night.” With that Dave went to the stern and hopped overboard into one of the two rowboats tied to his boat.
I lay a while longer, grabbed a bottle of water, did a few stretches, and after a few minutes, felt well enough to venture out of the cabin and into the summer sun. I was just wearing underwear and shorts from last night, so I felt the heat of the sun immediately on my body. It was nice, but blinding. When my eyes adjusted, I looked out to the water, and caught sight of what must’ve been Brad swimming pretty fast back and forth. I took a seat at the starboard side of the bow, so I could face out to sea and watch him. After a few minutes he paused, and looked over to the boat. I gave a very unenergetic wave, but he responded, and began to make his way over to the boat.
He heaved himself up onto the boat and for the first time I got a good look at him. The size of the shadow I glimpsed last night did not do him justice. The water trailed off his traps as his torso rose ever higher as he hauled himself up. He gripped the railings harder and pushed himself up, two triceps exploding to life as he did. He then swung a massive leg over the railing, and it landed with a heavy splash on the decking. He flashed me a smile as he began pulling himself to his full height. He had short dark hair which flowed beautifully into full stubble that lined his masculine jaw. His skin was a glowing olive, all of which offset a pair of blue eyes that sparkled like the sea that was still dripping off him. I watched a drop slowly begin descending from his neck. It travelled down the valley between two meaty pecs, and I continued to follow it as it meandered between his six abs. As it fell further, my eyes landed on his crotch. He was wearing just a red speedo. It was dark but shiny from having just been in the water. It looked a size too big for him, being quite wrinkly rather than hanging tightly on him. I assumed he was a bit of a modest fellow who didn’t want to draw attention, or maybe he lost weight recently. But I couldn’t dwell on my thoughts much longer, as he was standing fully upright now, had turned to face me, and said “Hey Stranger, the name’s Brad!”.
I introduced myself and gestured for him to sit down just across from me on the other side of the bow. This gave me a great view of him as he sat down opposite me. He leant back against the railing, lying at almost 45˚, exposing his muscular torso to the sun. He brought up his left leg onto the cushioning and leaned his left elbow on it as he supported his head, commenting on how he was still feeling the effects of last night’s drinks. His bicep flexed and bounced up and down as he rubbed his head. His arms were huge, certainly the biggest I had seen up this close, I reckoned at least 18 inches. I empathised with his hangover, and we spoke about what we did remember from last night. He was quite a talker, but I was happy to listen. His pecs heaved when he laughed about the antics he got up to. The drips highlighted how defined and cut he was. I felt I was staring for ages. It must’ve been a while, because the sea water was beginning to dry, and left his body literally glinting in the sun. His speedos were also beginning to look lighter in colour, and I noticed also less loose. This caught my attention, but I wanted to be subtle.
I kept directing open questions to him, and only answering with a yes or no to him, so he was soon lost in his stories again. I stole glances down every time he looked away, or closed his eyes to try and remember details of his night. I was right, his cock was definitely growing down there. The wrinkles of the suit began to disappear as a bulge began to form at his crotch. I could begin to see the shape of his dick as it slowly lengthened and filled the speedo out more. It also looked like his balls were expanding too, as the material of lower part also straightened out. As he rambled on, he continued to get bigger down there. His cock was lengthening and thickening; but now with the suit clinging relatively tightly to his new size, the material stopped any further advancement forward. I swear I could see the bulge kink and bend round as it still tried to thicken. This is when it suddenly dawned on me that he wasn’t getting hard. I theorised his genitals must have shrunk down a lot from his swim in the cold morning water. And now he was just warming up to his natural impressive size. However, the misshapen slowly growing bulge looked uncomfortable; and it must’ve been, as while he was still talking, he very nonchalantly pulled the waistband away from his body and bucked his hips. His cock lurched forward and down as it unfolded and grew into the new available space. As he let the speedo snap back onto his body, it now hugged a very impressive round sexy bulge, perfectly filling the perfectly-sized tight red suit. I figured he must be a healthy 5 to 6 inches soft, and pretty thick. Which was quite a pleasant unexpected growth from the initial practically non-existent bulge from his chilly willy I first saw. I was sure this was the case; nevertheless, I decided to test my theory.
“How was the water?” I interjected when he finally wrapped up his current saga.
“Not gonna lie mate, it was pretty nippy. Sun’s barely had time to warm it at all. Although an ice-cold blast does wonders for the hangover.” He replied.
Well the sun had had time to dry him up nicely, and was now reflecting off the salt crystals peppering his chiselled torso. He was a sight to behold, and now that his crotch had stopped growing, I was finally appreciating the rest of him. And there were a lot of bulges to appreciate as they rippled from time to time soaking up the sun.
“Why, you thinking of going for a dip?” He said as he stood up to get a bottle of water from the cooler Dave had on board. I watched as he rose to his 6’2” height. Turning sideways to walk across in front of me, I saw his big ass and quads tighten and marvelled as the big red bulge jiggled as he stepped. In profile it was clear just how sexily prominent his bulge was, its heft tugging on the material, showing it was in control, not the other way around. As he spun round to return to his seating position, again with one leg up, giving the bulge breathing space, I finally responded, “Perhaps I will in a bit. As you say, it might help with the headache”.
“You a strong swimmer?” He continued.
“Yeah, actually, in fact I was captain of my school’s swim team.” I said.
“No way! Me too! Well when it wasn’t rugby season.” He replied.
We began to converse about our various sporting endeavours at school. The conversation being much more two-way now that I wasn’t trying to ogle him. That being said, after several minutes, I did steal a glance down again. Seeing as he was almost displaying his bulge in that open position, it might seem weird if I keep avoiding it. My eyes quickly flicked back up to his, as I responded to his latest inquiry about which athletic events I preferred. My mouth ran off some generic answers, as my brain was pondering once again whether his speedo package was looking larger than before. I began stealing more regular glances. It was hard to tell. But when he went for a swig of water, tilting his head back, I decided to grab a longer look. I watched, it was hard to discern, but I swear I watched the whole round bulge slowly push the speedo further out as it enlarged. His head came back down, and I made sure to meet his gaze as he let out a refreshing sigh. Now, that I was curious again, I resorted to my initial tactic of getting him monologuing, so I could keep tabs on what appeared to be an ever-growing package.
As he answered my barrage of questions, I was able to keep peaking down at his red speedo. I couldn’t stare long enough to visibly see any growth in action, but evidence came in another form. I started to note that wrinkles were beginning to reappear in the suit. Whereas before, the wrinkles suggested a speedo too large for him, these taut lines represented quite the opposite. Initially it was just two. Two lines stretching from each side of the suit to the middle, fading as they reached the flesh-filled pouch. However, with each glance, more wrinkle lines would appear. Four. Six. As the round bulge swelled bigger and pushed forward they continued to appear. Eight. Ten. Twelve! Again, as I was only glancing briefly, I could not see the growth, but on my most recent peek, I clocked that his bulge was almost in line with the end of the cushion now. There were soon too many wrinkles to count, and I noted that there didn’t seem to be any more room for more to form. Additionally, more of his legs were being exposed at the sides, as all the material was being pulled forward by the expanding bulge.
He certainly seemed oblivious to all this going on, still chatting away about how much harder it is to play team sports outside of education. I didn’t know how much longer he couldn’t notice for though, the speedo seemed stretched to the limit.
Then I heard it.
It was hard to make out, as big Brad was still nattering on, but I heard what sounded like finger being dragged along the surface of an inflated balloon. I knew it must have been the fabric of the speedo straining after even more growth from his monstrous package. My theory was confirmed when my next cheeky glance down revealed that a space had been created above his muscular thighs where the material was now lifting away, pulled by what had to be about 9 inches of thick cock. I returned my attention back to Brad, had he not heard it? Apparently not, as he was still mid-sentence and continuing on like nothing happened. However, a few seconds later, I heard it again; and more prominently, as it fell between two words Brad was uttering. Brad continued speaking, but I saw a flash of shock appear in his eyes, and while talking he finally brought his leg down, and leant forward, trying to obscure my view of his bigger bulge. It worked briefly, my attention was now on his hefty pecs, making a muscular cleavage in this new hunched position, but I looked down again, and could still make out the bulge, which was now in line with end of the cushion on which he sat. Brad’s sudden fear and shift in posture must have meant he was aware of what was happening. I looked back into his eyes, waiting to see if he was going to acknowledge this weird occurrence. But he continued his story, finally finishing with a question to me.
“Umm,” I murmured, then paused while I tried to actually think of what he had just asked me. But in that silence, the sound of the speedo stretching happened again. With no voice to mask it, it was clear, to us both, what had just happened. I looked to him, and we shared an intense eye contact, still in silence, still gazing into each other’s eyes. Suddenly, a huge, loud and long, fabric-wrenching sound was emitted from his crotch as the speedo strained ever further. I couldn’t help but stare down, as I was now able to clearly see the dreamy round bulge surge forth and begin to overhang the seat. It was growing so big, stretching the speedo, making it paler in colour.
“Umm,” I began again, “Are you okay?” I naively asked.
Brad slowly and simply leant back against the railings, and spread his legs, allowing me a full unobstructed view of his almighty size. He then grew again. I was unabashedly ogling his growing crotch. The sight, coupled with the sound of the fabric slowly losing its fight to his beastly dick, was such a turn on.
“Yeah, I’m very okay.” He replied, almost laughing “You okay?”.
I leant back too, “Yeah, maybe too okay!” I joked as my new posture revealed my tenting shorts. Brad laughed.
“I wish I had known you were gay, I wouldn’t have been holding back otherwise!” His words were followed by three short bursts of rubbery stretching sounds as the tip of his bulge juddered bit by bit closer to the ground.
“Holding back?” I questioned, “Wait, you’re not getting hard right now?”
Brad laughed again. “Does this look hard to you?” He said cupping his giant package with his right hand. The round shape and way the bulge moved as its huge size overflowed his hand told me he was indeed still soft.
“N.. No.” I stammered, “Bu…but, how?”.
“Well, I’m guessing Dave’s suncream isn’t as water resistant as it claimed.” I stared blankly. Brad continued to explain further. “It seems when my body soaks up the sun and makes vitamin D, well, it really makes vitamin D.” His emphasis on the ‘D’ was complimented by another audible strain from his speedo, as his cock probably entered double figures in length. “Basically, when UV light hits my skin, it seems to make another hormone, as well as vitamin D, that goes to my dick and starts to make it grow. My balls too. The more light, the stronger the sun, the more skin exposed, the faster it happens. So, on a summery day like today, when I’m wearing only this, and haven’t got any protection on, well…” He trailed off, gesturing towards the now pinkish tight speedo barely containing an ever growing mass of meat.
It grew again, this time the straining noise sounded a little different, almost as though a few of the fabric’s threads were beginning to snap. The change in tone made the tent in my lap bob a little higher. Brad smirked as he saw my cock trying to grow like his, but failing. He adjusted his position, rocking his hips slightly, and I gazed in awe, as the huge soft bulge continued to jiggle for a couple of seconds, which then reminded me,
“Wait, you said you were holding back? …What did you mean by that?”
“Yeah, you’re cute. I was trying to not get turned on. But seeing as you like…” He paused, and I heard a similar sound to the one just before, as I saw his cock jump a little, “perhaps I should stop resisting”.
Suddenly a big straining sound was emitted, accompanied by some definite tearing sounds, as I saw a hardening cock shape surge forth. I could make out the outline of what was cock and what was balls now. Both hugely impressive sizes. Brad grunted and bucked his hips, and I could see the difference the erection was making to his genital growth. His cock was growing far faster than his balls as he got harder. The thick rod was pressed up against the ever-thinning material, so tight that I could make out the patterns of the veins on his dick. Especially as they continued to grow from both his arousal and his unique UV-absorbing condition. Brad moaned as another bout of rubbery straining and ripping sounds emanated from his crotch as the cock tried to lift away from his body as he got even harder. It was beginning to throb, and each pulse was accompanied by a ripping sound. I watched in lustful amazement as I saw holes beginning to appear in the speedo to the left and right of this mountainous bulge. Numerous ripping sounds continued as those strained wrinkle lines tore open into holes, allowing the speedo more slack. But it still wasn’t enough, as Brad’s cock quickly grew to fill the extra room. He was getting so big and hard, it looked around 14”. I could see most of it, as the base was exposed as his cockhead had pulled the waistband well away, and the speedo was more holes than material now. It was throbbing fast, and seemed to struggle to make that final growth it needed to burst free. Brad put both hands on the railings behind him, closed his eyes, leaned his head overboard, and then thrust. I watched as the base of his cock thickened substantially, the swelling then spread in a wave up his shaft, finally reaching his tip, which thickened too, adding that little bit of length so that a huge pop was heard as the speedo disintegrated into shreds, and a huge thick cock slapped up against his quivering abs.
Brad was breathing fast, and I was dripping pre, having watched that sexy spectacle. But it wasn’t over. In fact, I guess even more skin was exposed now to the sunlight, which would only increase his growth. His cock pointed straight up and was thick and rigid, now at full mast. But as I suspected the growth continued. I watched as his two apple-sized balls seemed to fill, his cock was nudging up a little higher with each throb, hard to notice, but I could see. And very soon it drew Brad’s attention as the head dug into his pec shelf.
He opened his eyes and looked down. Acknowledging the problem, he sank back down onto the cushion, and grabbed his shaft with his left hand pulled it away from his body. Fuck he was thick, his grasp not even close to encircling his cock. He then looked towards me, and pointed his cockhead in my direction and asked, “Want a taste?”.
I didn’t even answer but simply moved across to him, took his monster in both my hands and pulled his cockhead into my mouth. It was a tight fit, but incredibly arousing. I slowly pulled my lips back off it, wetting the entirety of the head. I then used my tongue to lick all over his slit and glans, while my hands worked up and down what felt like a telegraph pole. I then eased the head back into my mouth, and began rhythmically bobbing my head up and down. I could feel him sliding past on all sides of my mouth as his fat head pounded the back of my throat. God, he was filling up all the space in my mouth. I then remembered he must still be growing, despite me shading part of his body. I decided to pause and hold everything in place, just so I could feel this miracle. At first, I couldn’t sense any growth. But I moved my hands together so they formed a ring around his shaft, and soon I noticed how his cock was slowly expanding, as my interlocking fingers were being pulled apart by this growing man meat. I then realised that his cockhead was now at the back of my throat, not because I had gone further down on him, but because he had grown another 2 inches in length. I noticed he was getting much thicker too, as my fingertips finally parted. His cockhead was no exception and was pushing against all sides of my mouth, allowing no passage of air. This realisation was such a turn on I almost came right there and then. But the need to breathe triumphed, and I jolted my head back, gasping, while pulling his mammoth junk from my mouth.
“Well, well.” Said Brad, “Looks like you are enjoying. Perhaps we should move into the cabin before I become just too fucking big!” And with a smug grin, his cock grew up to halfway up his chest. Brad grabbed it, and began angling it down. “Open wide!”
I looked at him confused and scared. How could he think that thing was going to fit in my mouth again after it just nearly choked me?
“Your legs, silly!” He explained as he squatted down and slid his 18” dick under my groin. He slowly rose, pausing as he began to take my weight on his thick cock. I saw his quads bulge with dense striated muscle. After all this focus on his growing dick, I had forgotten just how hot and muscular he was. His thighs pumped up and his abs tensed, and he slowly stood up with me supported on his cock, balancing with my hands on his bulging shoulders. I could feel another dark spot of pre leaking onto my tented shorts, this was just so hot; but thankfully Brad wouldn’t have been able to see underneath his big pecs. Standing tall, Brad’s body was now fully bathed in sunlight. As he began marching me atop his junk, towards the cabin, I felt the rate of his cock growth increase, as the log supporting me thickened and rapidly lengthened, splaying my legs further apart. I let go of one of his shoulders, and felt the cock behind me as it grew to 20” and then 22”, each pulse lifting me higher as it gained more strength to take my weight.
We made it to the cabin, and everything stopped. Out of the direct sunlight, and so the UV, Brad’s cock finally stopped growing. “Well,” he said, “I’m yours.” I stared into his handsome face, and again saw a smug grin come over his face. He throbbed his mammoth beast, and the rising cock angle made me slide down so that I faceplanted into his chest and stabbed him in the abs with my own boner. “Ooof,” He reacted, “That’s quite the weapon you’ve got there yourself. How about you free him from his prison.” I felt the same way, so swung my left leg over his huge cock and dropped to the floor. As I did so, his cock, now unburdened, swung up and the tip was level with the base of his neck. Having quickly whipped off my shorts and underwear before Brad saw the pre stains, I spun round to take in the view of him again. Gigantic. Everything. Pure masculinity. I had to service him.
I grabbed the hand nearest to me, and began feeling and licking all the way up his arms; my tongue and fingers caressing every groove between the thick cords of muscle. On reaching his shoulder, I turned to face him, and had to stretch to touch each shoulder with each hand. His cockhead was level with my face, and was almost touching my nose as his broad chest pushed it out. I tried to ignore it for now, instead sliding both arms down to his biceps. He responded naturally, and raised both arms into a double bicep flex. Big boulders erupted forth, they split my fingers apart, and I tried to dig in, but the meat was just solid strength. I let my hands wander down to his pecs, and like clockwork, Brad started bouncing them, and my cock bounced in unison, tickling his balls in the process. I looked down and saw them. They were like two soft bowling balls, dangling down, halfway to his knees. I was so intrigued, I started fondling them, not noticing Brad begin to moan. I bent down and began to lick all around them, supporting their hefty weight in my hands, and watching as they overflowed from one of my palms to the other. As I licked them from bottom to top, I let my tongue run onto the base of Brad’s dick. He let out a louder deep moan, causing me to look up. I noticed now that his nipples had become sensitised, having thickened up, and were standing out a good half inch from his meaty pecs. I couldn’t resist, I jumped on his right one with my mouth, and began teasing and sucking at it, while ran my hands over his cobblestone abs, still trying to ignore the throbbing pillar next to my cheek. Brad moans only grew louder, he was loving this, and as I switched across to his left nipple, I saw a bead of pre run down his mighty shaft. While nibbling on his left nipple, I decided to reach across with my left hand and play with his right nipple simultaneously. In doing so, my arm was pressed against his 22” cock, and I could feel each throb, and just sense the power in it as it constantly vibrated with pure sexual energy. I couldn’t ignore it any longer. I left both hands twiddling at his teats, but began using my mouth to wet the beast before me. Round and round, up and down I went with my tongue, soaking his member, and causing Brad to start egging me on. When I was confident I had lubricated most of his shaft, I released his nipples and grabbed his cock with both hands, and began pumping his cannon. While continuing to wank him, I pulled the head towards me, at this angle, it was level with my mouth, and although too thick to fully fit in, I did my best to massage the glans with my lips. This was clearly appreciated by Brad, who began moaning and bucking. It was getting so hot, I had to pleasure myself too. One hand on my cock, the other on the largest one on the planet, while my mouth continued to suck its head. I accelerated the pace more and more, and more, until I realised I was close to cumming.
“Fuck, I gotta stop!” I panted.
“No worries,” Brad replied, “You certainly got me going good!”
As I began to regain some composure, a thought suddenly crossed my mind.
“OK, I gotta question… if it’s sunlight which makes… this… happen, then how come you don’t already have a cock as long as a road?”
“Well, the effects wear off after I cum. I guess all the energy is stored as cum, and having it kept there causes my junk to grow. But once its released, everything returns to its previous state.” I must’ve flashed a look of slight disappointment, as Brad quickly continued, “But I never used to be this muscular, or have an almost 6 inch soft cock. Or even this tall. But a man gets curious; and I tried my own come once, and noticed it led to some permanent gains.” He said as he flexed a bicep up to my face. I grab my dick and slowly start stroking in response. “If you carry on as you did before, you might get a treat”. The idea that I could possibly grow larger, seemingly everywhere, was such a turn on that I was once again close to the brink of orgasm, and a large globule of pre emerged from my slit and ran down my quivering cock. Brad noted this and decisively spoke up, “Actually, I think you’ll like to watch this.”
He walked over to the cabin door and stood in its entrance. I was wondering what he was doing, but then as I caught sight of the back of his hefty ballsack dropping down further towards his knees, I realised he was growing himself in the sun again. He was there for not even a minute, and then he spun round. Over 2 feet of thick meaty cock was advancing towards me, the tip bouncing around, now level with Brad’s luscious lips. He stopped inches from me. Bent his head a little down, and pulled his bloated cockhead into his mouth as much as he could. His lips moistened the slit as he used his bulging arms to forcefully pump the column before me. Brad began to moan as his actions became faster and stronger. I had subconsciously began wanking myself too. Brad’s eyes shut, and I could swear he was moaning ‘Fuck’ although his mouth was gagged by a head the size of a rugby ball. He let out one massive but muffled moan, and his stroking suddenly ceased. I looked down and saw his balls heave, and then watched his cock jerk as a torrent of cum ran up inside it and gushed into Brad’s mouth. The instant he began swallowing, I noticed him changing. I took a step back and watched as his whole body seemed to scale-up larger, keeping everything in proportion as he inched up, reaching now what must’ve been a towering 6’3”. He released his cock from his mouth, the spurts having finally ended, and I watched it lengthen an inch or two by itself so that the tip bumped against the bridge of his nose. I was on the edge, pumping like a maniac. Brad opened his eyes, saw me, and immediately placed his hands on his hips. And within an instant I saw his pecs puff out massively, expanding in size, weight and strength. His abs all swelled, fighting for space, and as he lifted his arms up and flexed, I saw his biceps grow larger and larger than before. His muscles were surging with much more energy than the rest of him, and that was my weakness. As his guns grew past the 20” mark, I blew my load and splattered his ripped torso, as his growth finally began to subside.
We were both left standing there, catching our breath. I apologised for spraying Brad, and he laughed it off, grabbing a towel. I watched as he wiped my cum off him, and noticed his balls were back to normal, well maybe a slightly bigger size, but I had no reference point. His cock on the other hand was still looming towards me at an inflated size. However, I watched as it both began to soften and shrink, arcing down in the process. Brad cast the towel aside, and looked down at himself from his new height. After what I had just witnessed, his flaccid cock looked a sorry sight. But after glancing back at my own, and then back at Brad’s, I realised he must be 7 inches soft now! Plus Brad certainly didn’t seem unimpressed. “Fuck! Look at me, I’m massive!” He bellowed, as he struck pose after pose. It was true, his muscles had significantly grown. Dave might not pick up on the extra inch in height or cock, but Brad’s bodybuilder stature biceps and pecs were bound to give the game away. I wonder if Dave knows about this? “Damn,” continued Brad as he cupped his enormous left pec in his right hand, “This is incredible! …but we best get covered up before Dave comes back with the food.”
I began redressing. Luckily the hot weather would dry my shorts out pretty quick from any embarrassing stains. I watched Brad rummage around the cabin until he found a pair of metallic blue speedos. He struggled to pull them up over his bigger legs. “Wow, I can’t believe how much my calves have grown. …Makes …this uuh..h. a bit difficult though, ..my quads too…” He wriggled about, his meaty muscles tensing and untensing in the process. They were just so big and defined now, I had never seen anything like it. Fuck I was getting aroused again. Brad eventually got the speedos on and over his genitals. They were super tight. And they made such a big beautiful blue bulge. It was shiny and massive, and I can’t believe I ever thought it looked small. Even framed by large cobbled abs and big quads, its size was unmistakeable. His thick 7 inch soft cock and balls already strained the material into a mouth-watering, big, round, shiny bulge. I couldn’t help but start boning up again. It looked so good. Brad caught sight of this, “Calm down now, Dave will be back any second.” I nodded, a bit disappointed and dropped my head. But instantly sprang it back up when I heard the now familiar sound of speedo fibres stretching. Brad was blushing, his arousal given away, and a glance at his package revealed some new taut wrinkles and a bit of delineation showing the outline of his chubbing cock. “No really,” Brad interrupted, resisting the moment, “let’s have you rub some suncream on my new muscles before I ruin another decent pair of speedos!”.